Find the number of species among the following which can exist.TiO2,VO2+,CrO42−,MnO4−,FeO42−,VO2+,TiO2+,Sc2O3,Mn2O7

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Find the number of species among the following which can exist.
$\begin{aligned} {TiO}_{2}, {VO}_{2}^{+}, {CrO}_{4}^{2 -}, {MnO}_{4}^{-}, {FeO}_{4}^{2 -}, {VO}^{2 +}, {TiO}^{2 +}, {Sc}_{2} O_{3}, {Mn}_{2} O_{7} \end{aligned}$

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answer is 9.

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Detailed Solution

The chemical formula for titanium dioxide is ${TiO}_{2}$ . It is a naturally occurring oxide with a wide range of ${TiO}_{2}$ , derived from the minerals ilmenite, rutile, and anatase.

A chromium oxo anion called chromate(2-) is created when two protons are taken out of chromic acid. As an oxidising agent, it plays a part.

An inorganic substance with the formula ${Mn}_{2} O_{7}$ is manganese(VII) oxide, often known as manganese heptoxide. This highly reactive liquid is volatile

All the species given in the problem exist.

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